Nissan GT-R (R35) · Service Manual
BODY EXTERIOR, DOORS, ROOF & VEHICLE SECURITY
BODY EXTERIOR, DOORS, ROOF & VEHICLE SECURITY › DOOR & LOCK › COMPONENT DIAGNOSIS
B2623 INSIDE KEY ANTENNA 3
B2623
Description
DTC Logic
Diagnosis Procedure
Description
Detects whether Intelligent Key is inside the vehicle.
Installed in the trunk room.
DTC Logic
DTC DETECTION LOGIC
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
B2623
INSIDE ANTENNA 3 CIRCUIT
An excessive high or low voltage from inside antenna is sent to BCM.
Inside key antenna (trunk room)
Between BCM and Inside key antenna (trunk room)
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III
Perform inside key antenna (“INSIDE ANT DIAGNOSIS”) on “Work Support” in “INTELLIGENT KEY”.
Perform “INTELLIGENT KEY” Self Diagnostic Result.
Is inside key antenna DTC detected?
YES
>>
Refer to
Diagnosis Procedure
.
NO
>>
Inside key antenna (trunk room) is OK.
Diagnosis Procedure
1.CHECK INSIDE KEY ANTENNA INPUT SIGNAL 1
Turn ignition switch OFF.
Check signal between BCM harness connector and ground with oscilloscope.
(+)
(–)
Condition
Signal
(Reference value.)
BCM
Connector
Terminal
M121
34, 35
Ground
Place Intelligent Key inside the vehicle.
Place Intelligent Key outside the vehicle.
Is the inspection result normal?
YES
>>
GO TO 4
.
NO
>>
GO TO 2
.
2.CHECK INSIDE KEY ANTENNA CIRCUIT
Disconnect BCM and inside key antenna (trunk room) connector.
Check continuity between BCM harness connector and inside key antenna (trunk room) harness connector.
BCM
Inside key antenna
Continuity
Connector
Terminal
Connector
Terminal
M121
34
B41
2
Existed
35
1
Check continuity between BCM harness connector and ground.
BCM
Ground
Continuity
Connector
Terminal
M121
34
Not existed
35
Is the inspection result normal?
YES
>>
GO TO 3
.
NO
>>
Repair or replace harness.
3.CHECK INSIDE KEY ANTENNA INPUT SIGNAL 2
Replace inside key antenna (trunk room). (New antenna or other antenna)
Connect BCM and inside key antenna (trunk room) connector.
Check signal between BCM harness connector and ground with oscilloscope.
(+)
(–)
Condition
Signal
(Reference value.)
BCM
Connector
Terminal
M121
34, 35
Ground
Place Intelligent Key inside the vehicle.
Place Intelligent Key outside the vehicle.
Is the inspection result normal?
YES
>>
Replace inside key antenna (trunk room). Refer to
Removal and Installation
.
NO
>>
Replace BCM. Refer to
Removal and Installation
.
4.CHECK INTERMITTENT INCIDENT
Refer to
Intermittent Incident
.
>>
INSPECTION END
DTC DETECTION LOGIC
1.PERFORM DTC CONFIRMATION PROCEDURE
With CONSULT-III
